<template>
  <div>
    <h1>One</h1>
    <p>{{count}}</p>
    <button @click="count++">累加</button>
  </div>
</template>

<script>
export default {
    name:"One",
    data(){
        return{
            count:0,
        }
    },
    mounted(){
        console.log("One组件挂载");
    },
    beforeDestroy(){
        console.log("One组件卸载");
    }
}
</script>

<style>

</style>